如何使用与PHP一起使用的Java HttpClient库上载文件

我想编写Java应用程序,它将使用PHP将文件上传到Apache服务器。Java代码使用Jakarta HttpClient库版本4.0 beta2:

import java.io.File;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.HttpVersion;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.entity.FileEntity;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.params.CoreProtocolPNames;

import org.apache.http.util.EntityUtils;

public class PostFile {

public static void main(String[] args) throws Exception {

HttpClient httpclient = new DefaultHttpClient();

httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);

HttpPost httppost = new HttpPost("http://localhost:9002/upload.php");

File file = new File("c:/TRASH/zaba_1.jpg");

FileEntity reqEntity = new FileEntity(file, "binary/octet-stream");

httppost.setEntity(reqEntity);

reqEntity.setContentType("binary/octet-stream");

System.out.println("executing request " + httppost.getRequestLine());

HttpResponse response = httpclient.execute(httppost);

HttpEntity resEntity = response.getEntity();

System.out.println(response.getStatusLine());

if (resEntity != null) {

System.out.println(EntityUtils.toString(resEntity));

}

if (resEntity != null) {

resEntity.consumeContent();

}

httpclient.getConnectionManager().shutdown();

}

}

PHP文件upload.php非常简单:

<?php

if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {

echo "File ". $_FILES['userfile']['name'] ." uploaded successfully.\n";

move_uploaded_file ($_FILES['userfile'] ['tmp_name'], $_FILES['userfile'] ['name']);

} else {

echo "Possible file upload attack: ";

echo "filename '". $_FILES['userfile']['tmp_name'] . "'.";

print_r($_FILES);

}

?>

阅读响应,我得到以下结果:

executing request POST http://localhost:9002/upload.php HTTP/1.1

HTTP / 1.1 200 OK

可能的文件上传攻击:文件名“。

数组

这样请求就成功了,我可以与服务器通信了,但是PHP没有注意到文件-

is_uploaded_file返回的方法false$_FILES变量为空。我不知道为什么会这样。我已经跟踪了HTTP响应和请求,它们看起来还不错:

请求是:

POST /upload.php HTTP / 1.1

内容长度:13091

内容类型:二进制/八位字节流

主机:localhost:9002

连接:保持活动

用户代理:Apache-HttpClient / 4.0-beta2(java 1.5)

期望:100-继续

˙Ř˙ŕ.....其余的二进制文件...

和回应:

HTTP / 1.1 100继续

HTTP / 1.1 200 OK

日期:2009年7月1日星期三06:51:57 GMT

服务器:Apache / 2.2.8(Win32)DAV / 2 mod_ssl / 2.2.8 OpenSSL / 0.9.8g mod_autoindex_color PHP / 5.2.5 mod_jk / 1.2.26

X-Powered-By:PHP / 5.2.5

内容长度:51

保持活动:超时= 5,最大= 100

连接:保持活动

内容类型:text / html

可能的文件上传攻击:文件名''.Array

我正在使用xampp的本地Windows XP和远程Linux服务器上对此进行测试。我还尝试使用HttpClient的早期版本-版本3.1-

is_uploaded_file返回的结果更加不清楚false,但是$_FILES数组中填充了正确的数据。

回答:

好的,我使用的Java代码是错误的,这里是正确的Java类:

import java.io.File;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.HttpVersion;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.entity.mime.MultipartEntity;

import org.apache.http.entity.mime.content.ContentBody;

import org.apache.http.entity.mime.content.FileBody;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.params.CoreProtocolPNames;

import org.apache.http.util.EntityUtils;

public class PostFile {

public static void main(String[] args) throws Exception {

HttpClient httpclient = new DefaultHttpClient();

httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);

HttpPost httppost = new HttpPost("http://localhost:9001/upload.php");

File file = new File("c:/TRASH/zaba_1.jpg");

MultipartEntity mpEntity = new MultipartEntity();

ContentBody cbFile = new FileBody(file, "image/jpeg");

mpEntity.addPart("userfile", cbFile);

httppost.setEntity(mpEntity);

System.out.println("executing request " + httppost.getRequestLine());

HttpResponse response = httpclient.execute(httppost);

HttpEntity resEntity = response.getEntity();

System.out.println(response.getStatusLine());

if (resEntity != null) {

System.out.println(EntityUtils.toString(resEntity));

}

if (resEntity != null) {

resEntity.consumeContent();

}

httpclient.getConnectionManager().shutdown();

}

}

注意使用MultipartEntity。

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